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Almost have a 2708 dumper working

I have an interesting... thing... with a bunch of 2708 chips in it, and I want to read them. But I'm very wary, because I don't want to fry them.   The problem is that the 2708 needs extra supply voltages of -5 and +12 volts just to read a chip, but it also needs +26V for programming. The extra cost of all the extra voltages means almost zero programmers support it without extra hardware.   A few months ago, I tried to do the simple idea, add a socket board with some pins cha

Bruce Tomlin

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